My criteria goes:

1: Get thee to a nunnery, instant revulsion whenever I remember it exists

2: Really no higher through effort on the movie's part, I just feel more charitable

3: Not exactly in worst of all time conversations, but near it

4: Below average

5: Average

6: Above average, but that still sounds better than many 6's I give; basically middling to fine

7: Good! Opportunity for advancement

8: Great! Probably worthy of higher but just didn't grab me quite that much

9: Nearly masterful, usually just don't want to be too premature and declare it so right away

10: Perfect in my own estimation, will carry with me my entire life, would date if a person